3D其实就是一个球体，主要引入SceneView就可以实例了  ``` require([ 'esri/Map', 'esri/views/SceneView', ], function(Map, SceneView) { var map = new Map({ basemap: 'hybrid' }); var sceneView = new SceneView({ map: map, container: 'js_map' }); }); ```